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Cortex Chat is the conversation product at cortex.foundation. Ask questions, write, research with citations, work with documents and images, and keep related work together in projects. Chat works before you sign in; projects, files, memory, plans, and connections belong to a signed-in account.
Cortex Chat home in the dark theme

Chat home in the dark theme — the composer with its model chip and the four starting points: Code, Research, Docs, Agents. Theme is under Settings → General.

Start here

chat

Quickstart

First message, attach a file, pick a model, keep the thread in a project.

Overview

What Chat is for, what lives where in the sidebar, and when to switch to Code or Bot.

Accounts

Guest allowance versus a signed-in member, and what each can do.

Core guides

Projects

Standing instructions, chats, and files kept together. Every chat in a project starts from its instructions.

Library

Everything you uploaded and everything the assistant produced. Files stay when a chat is deleted.

Plans

Turn a long answer into steps you can tick off. Start one from any chat or from Planning.

Models and thinking

Cortex 1 Mini, Cortex Teutonic-1, the Thinking level, and what happens at peak hours.

Tools and connectors

Built-in tools, connected apps, GitHub, and MCP servers — and which product each connection reaches.

Sharing and teams

Chat is per account. What that means for projects, plans, and threads.

Research and media

Deep Research

Plan the questions, read live sources, write a cited report.

Image generation

Cortex-Image-1 from the composer. Quota, not a paywall, on Free and Guest.

Origin check

Ask whether attached media is authentic. Fails closed when it cannot run.

Voice

Dictate with the mic and hear answers with Listen — when the deployment supports them.

Context that carries over

  • Memory — standing preferences and facts, reviewable and deletable one by one.
  • Canvases — a document sidecar beside the conversation, drafted by Cortex or by you.

Under the hood

  • How Chat works — the tool loop, compaction, and Chat’s round budget.
  • Streaming — tokens, then tools, then the finished reply; what happens on a dropped connection.
  • Settings — theme, language, shortcuts, defaults, privacy.